RB2-73 round cut precious stone design



FIG. 1 is a top view of the RB2-73 round cut precious stone design;

FIG. 2 is a bottom view of the RB2-73 round cut precious stone design; and,

FIG. 3 is a side view of the RB2-73 round cut precious stone design. 

The ornamental design for a RB2-73 round cut precious stone design, substantially as shown and described. 